Ironshore announced today that the latest executive defectors from AIG Environmental, Joe Boren and John O'Brien, have joined the company as leaders of a newly established Ironshore environmental insurance facility.

American International Group has been struggling to keep staff amid its efforts to sell off various units to pay off billions in government loans.

Mr. Boren, who was chief executive officer at AIG Environmental, will become CEO of the new Ironshore unit, which is to be based in New York. Mr. O'Brien, previously president and chief operating officer of AIG, will be president.

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